Dave_fr
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Dave_fr's Discussions

Connecting gyros to ardupilot

Started this discussion. Last reply by Chris Anderson Aug 22, 2009. 3 Replies

Getting familiar with the projet.

Started this discussion. Last reply by Chris Anderson May 2, 2009. 2 Replies

 

Dave_fr's Page

Latest Activity

Dave_fr replied to johnkowalsky's discussion Raspberry PI
"You are rising the question of latency but, (I'm not a linux specialist) to my knowledge the linux kernel offers realtime capabilities. Isn't the ar.drone running on linux ?"
Mar 30, 2013
Dave_fr commented on PX4's blog post Introducing the PX4 autopilot system
"I have one question : I don't quite understand the interactions between the px4 autopilot project and the Pixhawk one. When I look at the pixHawk project, I see that the hardware used is different to the px4 autopilot and is not using an RTOS.…"
Sep 24, 2012
Dave_fr commented on PX4's blog post Introducing the PX4 autopilot system
"Nice ! Is it running the nuttx rtos based software ?"
Sep 24, 2012
Dave_fr commented on PX4's blog post Introducing the PX4 autopilot system
"I think that's what all other potential buyers inluding me are waiting for ..."
Sep 20, 2012
Dave_fr commented on PX4's blog post Introducing the PX4 autopilot system
"Thanks for your answer, I also very much appreciate the whole system architecture. I think I'll wait to see something flying for real before I get it. The architecture looks very promissing but the nuttx RTOS seems to be very new and not that…"
Sep 15, 2012
Dave_fr commented on PX4's blog post Introducing the PX4 autopilot system
"This question is probably a bit out of place but can someone tell me what is going on with the code side of the px4 project ?"
Sep 14, 2012
Dave_fr commented on Wouter van Verre's blog post Developing an IMU from the UAVDevBoard
"I don't underdand why these frequencies are the only ones acceptable. I see that N1 & N2 are limited to a few values but can't you set M (PLLFBDbits.PLLDIV) to get,say 80Mhz ?"
Mar 10, 2012
Dave_fr commented on Ben Levitt's blog post UDB4 Available Today from SparkFun
"Thanks for your answers !   But then, why not selling the UDB with a bootloader already installed ?  "
Nov 26, 2011
Dave_fr commented on Ben Levitt's blog post UDB4 Available Today from SparkFun
"I'm trying to load the code with PicKit2. I use pickit2 as standalone with the pickit2 associated software. I connect the board with the triangle on the pickit2 facing the dash on the UDB4, power it with external 5 volt power source. After…"
Nov 26, 2011
Dave_fr replied to Chris Anderson's discussion Discussion forum for UAVDevBoard, Sparkfun's 3-axis IMU-based autopilot board
"Thanks Bill !"
Oct 24, 2011
Dave_fr replied to Chris Anderson's discussion Discussion forum for UAVDevBoard, Sparkfun's 3-axis IMU-based autopilot board
"I just ordered a udb4 board. I've installed mplab along with the c30 compiler evaluatation version on two differents computers. When I try to compile the matrixpilotV3.2 for udb4 I get the same error on both computers…"
Oct 24, 2011
Dave_fr commented on Ben Levitt's blog post UDB4 Available Today from SparkFun
"Can someone tell me wether picKit2 would be ok to program it ?"
Oct 21, 2011
Dave_fr replied to Chris Anderson's discussion Discussion forum for UAVDevBoard, Sparkfun's 3-axis IMU-based autopilot board
"Hi Doug, To compute the angle of attack pitch is not really needed unless use in conjuction with vertical velocity and airspeed. What is really important though is airspeed, mass and Acceleration. The formula that links the lift, threrefore Z…"
Jun 21, 2010
Dave_fr replied to Tom P's discussion Euler/rotation matrix/DCM help
"Hi Tom, You should disassociate rotation and Euler angles. Euler angles are state parameters more commonly known as pitch roll and yaw whereas rotation is the state transition that describes how the state (euler angles) change ( how the plane…"
Jun 15, 2010
Dave_fr replied to Matthew M's discussion MediaTek MT3329 GPS 10Hz
"Hi Gilles, Thanks for your help !"
May 29, 2010
Dave_fr replied to Matthew M's discussion MediaTek MT3329 GPS 10Hz
"You have to set the right baud rate. Otherwise on some terminal you will see the strange caracters. As an example mine runs at 38 400 bauds default settings. But as I Asked above, I don't know you to change settings on the GPS... By the WAY,…"
May 29, 2010

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